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Sensor setup and measurement protocol, (A) Snapshot of a sprinter wearing the Fieldwiz sensor with the speed radar in the foreground (B) Specifications of the Fieldwiz sensor and the measurement protocol, wherein the sprinters ran two trials each of 60 m and 30 or 40 m distances with the speed radar as the velocity reference. Photocells were positioned at the start/end to record the sprint duration. GF and SF represent the global and sensor frames.
